<template>
	<view class="preview" v-if="currentInfo">
		<swiper circular="" :current="currentIndex" @change="swiperChange" >
			<swiper-item v-for="(item,index) in classList" :key="item._id">
				<image v-if="readImgs.includes(index)" @click="maskchange" :src="item.picurl" mode="aspectFill"></image>
			</swiper-item>
		</swiper>

		<view class="mask" v-if="maskSate">
			<view class="goback" :style="{top:getstatusBarHeight()+'px'}" @click="goback">
				<uni-icons type="back" size="20" color="#fff"></uni-icons>
			</view>
			<view class="count">{{currentIndex+1}}/{{classList.length}}</view>
			<view class="time">
				<uni-dateformat :date="new Date()" format="hh:mm"></uni-dateformat>
			</view>
			<view class="date">
				<uni-dateformat :date="new Date()" format="MM月dd日"></uni-dateformat>
			</view>
			<view class="footer">
				<view class="box" @click="clickinfo">
					<uni-icons type="info" size="28"></uni-icons>
					<view class="text">信息</view>
				</view>
				<view class="box" @click="clickscore">
					<uni-icons type="star" size="28"></uni-icons>
					<view class="text">{{currentInfo.score}}分</view>
				</view>
				<view class="box" @click="clickDownload">
					<uni-icons type="download" size="23"></uni-icons>
					<view class="text">下载</view>
				</view>
			</view>
		</view>

		<uni-popup ref="infoPopup" type="bottom">
			<view class="infoPopup">
				<view class="popHeader">
					<view></view>
					<view class="title">壁纸信息</view>
					<view class="close" @click="clickinfoclose">
						<uni-icons type="closeempty" size="18"></uni-icons>
					</view>
				</view>

				<scroll-view scroll-y="true">
					<view class="content">
						<view class="row">
							<view class="label">壁纸ID：</view>
							<text selectable class="value">{{currentInfo._id}}</text>
						</view>

						<!-- 						<view class="row">
							<view class="label">分类：</view>
							<text selectable class="value class">{{currentInfo.}}</text>
						</view>
						 -->
						<view class="row">
							<view class="label">发布者：</view>
							<text selectable class="value">{{currentInfo.nickname}}</text>
						</view>

						<view class="row">
							<view class="label">评分：</view>
							<view class="value rotebox">
								<uni-rate readonly touchable :value="currentInfo.score" />
								<text class="score">{{currentInfo.score}}分</text>
							</view>
						</view>

						<view class="row">
							<view class="label">摘要：</view>
							<text selectable class="value">{{currentInfo.description}}</text>
						</view>

						<view class="row">
							<view class="label">标签：</view>
							<view class="value tabs">
								<view class="tab" v-for="tab in currentInfo.tabs">{{tab}}</view>
							</view>
						</view>

						<view class="copyright">
							@版权声明，本图片来自网络，非商业使用，用于学习交流，如有侵权请联系管理员删除
						</view>
						
						<view class="safe-area-inset-bottom"></view>

					</view>
				</scroll-view>
			</view>
		</uni-popup>

		<uni-popup ref="scorePopup">
			<view class="scorePopup">
				<view class="popHeader">
					<view></view>
					<view class="title">{{isScore?'评分过了~':'壁纸评分'}}</view>
					<view class="close" @click="clickscoreclose">
						<uni-icons type="closeempty" size="18"></uni-icons>
					</view>
				</view>

				<view class="content">
					<uni-rate v-model="usescore" @change="onChange" allowHalf="" :disabled="isScore"
						disabled-color="#FFCA3E" />
					<text class="text">{{usescore}}分</text>
				</view>
				<view class="footer">
					<button :disabled="!usescore || isScore" @click="submitscore" type="default" size="mini"
						plain>确认评分</button>
				</view>

			</view>
		</uni-popup>

	</view>
</template>

<script setup>
	import {ref} from 'vue';
	import {onLoad,onShareAppMessage,onShareTimeline} from '@dcloudio/uni-app'
	import {getstatusBarHeight} from '@/utils/system.js';
	import {apiGetSetupScore,apiWriteDownload,apiDetailWall} from '@/api/apis.js'

	const infoPopup = ref(null)
	const maskSate = ref(true)
	const scorePopup = ref(null)
	const usescore = ref(0)
	const isScore = ref(false)
	const classList = ref([])
	const currentId = ref(null)
	const currentIndex = ref(0)
	const readImgs = ref([])
	const currentInfo = ref(null)

	// 直接拿到后台存储的所有内容,交给classList,当然,要先进行处理,把其中picurl一项的后缀做变更
	const storageClassList = uni.getStorageSync("storageClassList") || [];
	classList.value = storageClassList.map(item => {
		return {
			...item,
			picurl: item.smallPicurl.replace("_small.webp", ".jpg")
		}
	})


	//获取图片的id
	onLoad(async(e) => {
		currentId.value = e.id		
		if(e.type == 'share'){
			let res = await apiDetailWall({id:currentId.value})
			classList.value = res.data.map(item => {
				return {
					...item,
					picurl: item.smallPicurl.replace("_small.webp", ".jpg")
				}
			})
		}		
		console.log(currentId.value);
		currentIndex.value = classList.value.findIndex(item => item._id == currentId.value)
		currentInfo.value = classList.value[currentIndex.value]
		console.log(currentInfo.value);
		console.log(currentInfo.value.score);
		readImgsFun()
	})

	function readImgsFun() {
		readImgs.value.push(
			currentIndex.value <= 0 ? classList.value.length - 1 : currentIndex.value - 1,
			currentIndex.value,
			currentIndex.value >= classList.value.length - 1 ? 0 : currentIndex.value + 1
		)
		readImgs.value = [...new Set(readImgs.value)]
	}

	const swiperChange = (e) => {
		// 滑动开始之后,当前页的信息携带就不再是currentId了,而是由currentIndex全面接管
		currentIndex.value = e.detail.current;
		currentInfo.value = classList.value[currentIndex.value]
		// 滑动的时候.会把前后都加入到数组里面
		readImgsFun()
		console.log(readImgs.value);
		console.log(currentInfo.value.score);
	}

	// 确认评分
	const submitscore = async () => {
		uni.showLoading({
			title: "加载中..."
		})
		let {
			classid,
			_id: wallId
		} = currentInfo.value
		let res = await apiGetSetupScore({
			classid,
			wallId,
			userScore: usescore.value //右边是我们自己定义的，左边是接口属性名
		})
		uni.hideLoading()
		if (res.errCode === 0) {
			uni.showToast({
				title: "评分成功",
				icon: "none"
			})
			classList.value[currentIndex.value].userScore = usescore.value;
			uni.setStorageSync("storageClassList", classList.value)
			clickscoreclose();
			usescore.value = 0;
		}
	}

	const onChange = () => {
		console.log(usescore.value);
	}
	
	//分享给好友
	onShareAppMessage((e)=>{
		return {
			title:"@@@@",
			path:"/pages/preview/preview?id="+currentId.value+"&type=share"
		}
	})
	
	//分享朋友圈
	onShareTimeline(()=>{
		return {
			title:"虾米壁纸",
			query:"id="+currentId.value+"&type=share"
		}
	})
	

	//打开评分框
	const clickscore = () => {
		if (currentInfo.value.userScore) {
			isScore.value = true;
			usescore.value = currentInfo.value.userScore
		}
		scorePopup.value.open();
	}

	//关闭评分框
	const clickscoreclose = () => {
		scorePopup.value.close();
		usescore.value = 0
		isScore.value = false;

	}

	//关闭详情框
	const clickinfoclose = () => {
		infoPopup.value.close();
	}

	//打开详情框
	const clickinfo = () => {
		infoPopup.value.open();
	}

	const maskchange = () => {
		maskSate.value = !maskSate.value
	}

	// 返回上一页
	const goback = () => {
		uni.navigateBack({
			success:()=>{},
			fail:(err)=>{
				uni.reLaunch({
					url:"/pages/index/index"
				})
			}
		})
	}


	//点击下载
	const clickDownload = async () => {

		// #ifdef H5
		uni.showModal({
			content: "请长按保存壁纸",
			showCancel: false
		})
		// #endif

		// #ifndef H5
		try {
			uni.showLoading({
				title: "下载中...",
				mask: true
			})
			// 解构
			let {
				classid,
				_id: wallId
			} = currentInfo.value;
			let res = await apiWriteDownload({
				classid,
				wallId
			})
			// 如果返回404,那么就不继续,errCode=0时是正常的
			if (res.errCode != 0) throw res;
			uni.getImageInfo({
				src: currentInfo.value.picurl,
				success: (res) => {
					uni.saveImageToPhotosAlbum({
						filePath: res.path,
						success: (res) => {
							uni.showToast({
								title: "保存成功，请到相册查看",
								icon: "none"
							})
						},
						fail: err => {
							if (err.errMsg == 'saveImageToPhotosAlbum:fail cancel') {
								uni.showToast({
									title: '保存失败，请重新点击下载',
									icon: "none"
								})
								return;
							}
							uni.showModal({
								title: "授权提示",
								content: "需要授权保存相册",
								success: res => {
									if (res.confirm) {
										uni.openSetting({
											success: (setting) => {
												console.log(
													setting);
												if (setting
													.authSetting[
														'scope.writePhotosAlbum'
														]) {
													uni.showToast({
														title: "获取授权成功",
														icon: "none"
													})
												} else {
													uni.showToast({
														title: "获取权限失败",
														icon: "none"
													})
												}
											}
										})
									}
								}
							})
						},
						complete: () => {
							uni.hideLoading();
						}
					})

				}
			})

		} catch (err) {
			console.log(err);
			uni.hideLoading();
		}
		// #endif
	}
</script>

<style lang="scss" scoped>
	.preview {
		width: 100%;
		height: 100vh;
		position: relative;

		swiper {
			width: 100%;
			height: 100%;

			image {
				width: 100%;
				height: 100%;
			}
		}

		.mask {
			&>view {
				position: absolute;
				left: 0;
				right: 0;
				margin: auto;
				width: fit-content;
				color: #fff;
			}

			.goback {
				width: 38px;
				height: 38px;
				background: rgba(0, 0, 0, 0.5);
				left: 30rpx;
				margin-left: 0;
				border-radius: 100px;
				top: 0;
				backdrop-filter: blur(10rpx);
				border: 1rpx solid rgba(255, 255, 255, 0.3);
				display: flex;
				align-items: center;
				justify-content: center;
			}

			.count {
				top: 10vh;
				background: rgba(0, 0, 0, 0.3);
				font-size: 28rpx;
				border-radius: 40rpx;
				padding: 8rpx 28rpx;
				backdrop-filter: blur(10rpx);
			}

			.time {
				font-size: 140rpx;
				top: calc(10vh + 80rpx);
				font-weight: 100;
				line-height: 1em;
				text-shadow: 0 4rpx rgba(0, 0, 0, 0.3);
			}

			.date {
				font-size: 34rpx;
				top: calc(10vh + 230rpx);
				text-shadow: 0 2rpx rgba(0, 0, 0, 0.3);
			}

			.footer {
				background: rgba(255, 255, 255, 0.8);
				bottom: 10vh;
				width: 65vw;
				height: 120rpx;
				border-radius: 120rpx; //一般保持一样，就是个胶囊按钮了
				color: #000;
				display: flex;
				justify-content: space-around;
				align-items: center;
				box-shadow: 0 2rpx rgba(0, 0, 0, 0.1);
				backdrop-filter: blur(20rpx);

				.box {
					display: flex;
					flex-direction: column;
					align-items: center;
					justify-content: center;
					padding: 2rpx 12rpx; //自己试出来的，加padding实现增加了触摸范围

					// border: 1rpx solid red;
					.text {
						font-size: 26rpx;
						color: $text-font-color-2;
					}
				}
			}
		}

		// 复用的代码,提到前面来
		.popHeader {
			display: flex;
			justify-content: space-between;
			align-items: center;

			.title {
				color: $text-font-color-2;
				font-size: 26rpx;
			}

			.close {
				padding: 6rpx;
			}
		}

		.infoPopup {
			background: #fff;
			padding: 30rpx;
			border-radius: 30rpx 30rpx 0 0; //前面是左上角右上角，后面是下角
			overflow: hidden;

			scroll-view {
				max-height: 60vh;

				.content {
					.row {
						display: flex;
						padding: 16rpx 0;
						font-size: 32rpx;
						line-height: 1.7em;

						.label {
							color: $text-font-color-3;
							width: 140rpx;
							text-align: right;
							font-size: 30rpx;
						}

						.value {
							flex: 1;
							width: 0;
						}

						.rotebox {
							display: flex;
							align-items: center;

							.score {
								font-size: 26rpx;
								color: $text-font-color-2;
								padding-left: 20rpx;
							}
						}

						.tabs {
							display: flex;
							flex-wrap: wrap;

							.tab {
								border: 1px solid $brand-theme-color;
								color: $brand-theme-color;
								font-size: 22rpx;
								padding: 10rpx 30rpx;
								border-radius: 40rpx;
								line-height: 1em;
								margin: 0 10rpx 10rpx 0;
							}
						}

						.class {
							color: $brand-theme-color;
						}
					}

					.copyright {
						font-size: 28rpx;
						padding: 20rpx;
						background-color: #f6f6f6;
						color: #666;
						border-radius: 10rpx;
						margin: 20rpx 0;
						line-height: 1.6em;
					}
				}
			}
		}

		.scorePopup {
			background: #fff;
			padding: 30rpx;
			width: 70vw;
			border-radius: 30rpx;

			.content {
				padding: 30rpx 0; //上下30，左右0
				display: flex;
				justify-content: center;
				align-items: center;

				.text {
					color: #FFCA3e;
					padding-left: 10rpx;
					width: 80rpx;
					line-height: 1em;
					text-align: right;
				}
			}

			.footer {
				button {
					width: 220rpx;
					padding: 10rpx 0;
					display: flex;
					align-items: center;
					justify-content: center;
				}
			}
		}
	}
</style>